Apparatus for forming metallic retaining members



May 13, 1930.

4 Sheets-Shen Filed Sept. 29I 1924 k NN Hifi. AN N .IJIII NN WN ..N A...

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E. H. SCHANE 1,758,470

APPARATUS FOR FORMIG METALLIC RETAINING MEMBERS May 13, 1930.

Filed Sept. 29, 1924 4 Sheets-Sheet 2 Y May 1 3, 1930. E. H, scHANE 1,758,470

A PPARTUS FOR FORMING METALLIC RETAINING MEMBERS Filed Seri- 29. V1924 4 sheets-sheet 3 \i C) lll.

May 13, 1930. E. H. scHANE 1,758,470'

APPARATUS FOR FORMING METALLIC RETAINING MEMBERS Filed Sept. 29., 1924 l4 sheets-sneer 4 Patented May 13, IgE@ usano* EDXVAR/l)I H. SCHANE, OF CLEVELAND, OHIO, ASSGNGR TO THE EAII'NER'IVi'AN'l'J'FAC-V- TURING COMPANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO at a low cost.

APPARATUS FOR FORIVIING METALLIG RETAINING MEMBERS Application :filed September 29, 192747. Serial No. 740,566.

This invention relates to apparatus for forming metallic retaining members, particularly chaplets such as employed for supporting the core of a mold.

`More specifically the present invention relates to apparatus for applying heads to the stems of chaplets or other members of similar form in such manner that the head is rigidly held in place upon the stem.

It is quite important that chaplets which are used for supporting the core Within an assembled mold prior to the pouring operation be so constructed that they will not be weakened by the heat of the molten metal until sufficient metal has entered the mold to fill the cavity beneath the core and to support the core. Since 'the chaplets are ymelted and become part of the metal of the casting, it is also very important that they be inexpensive. Y n

It is the object of the present invention to provide apparatus by means of which chaplets of superior More specifically it is the object of the invention to provide apparatus by which the attached head is securely fixed to the stem and supported by an annular shoulder formed upon the stem which is of such thickness that ity will not be weakened sufficiently by the heat of the molten metal to permit movement CAB of the head on the stem and settling of the core before there is sufficient metal' in the mold to support the core and also to provide apparatus by which such chaplets can be manufactured at a rapid rate and at a ry low cost. VVith the above and other objects in View the invention may be said to comprise the apparatus as illustrated in the accompanying .dramf'ings hereinafter described and particularly set fort-h in the appended claims, together with such variations and modifications thereof as will be apparent to one skilled in the art to which the invention appertains.

Reference should be had to the accompanying drawings forming a part of this specification in which Fig. 1 is a section taken on line 1 1 of Fig. 3 and showing a top plan view of the bed of the press and the mechaquality may be manufactured Y f the bed.

'Referring first to Figs-5 to 8 of the drawing, the chaplet which the present invention is designed to produce has a stem a and a head integral with the stem and an attached head c which is secured to the vvupper end of the stem, as shown in Fig. 8, the stem having a relatively thick annular shoulder d against which the underface of the attached head c bears and the upper end of the stem being upset to secure the head c to the stem. In forming the chaplets, blanks such as shown in Fig. 5 are continuously fed to the machine in which the stem is rst operated upon by upsetting dies which form an annular shoulder o? upon the stem as shown in Fig. 6. The head c is then applied by a second set of dies which cause the stem to pierce the material of the head as indicated in Fig. and finally by means of a third set of dies the projecting end of the stem is upset to firmly secure the-head to the stem, thus forming the complete chaplet as shown in F ig. 8.

The above described operationsare performed successively upon the individual chaplet blanksas they'are fed through the machine, the blanks being so fed and the machine so operated that the three operations are performed simultaneously uponl three successive blanks. y Y

The forming operations are performed by means of a press which has a bed l and a head 2 which reciprocates toward and from The `blank feeding mechanism is mounted upon the bed of the press and is operated by means of an upright shaft 3 which is `iournaled in the bed centrally thereof. vFixed to the upper end of t-he shaft 3 is a disk 4 which bears upon the bottom of a circular lle* to the underside of which are attached dies recess `formed in the upper face ofthe bed. The disk l has a series of regularly spaced die forming plates 6 securedat regular intervals to the upper face thereof, the outer ends of the die plates 6 extending to adjacent the' periphery of the disk and having undercut notches atV their outer ends adapta ed to receive the headsb of the chaplet blanks y :of` the diskformovement radially with respect to the disk toward and from the periphthereof The movable die plates 9, 10

i vand l1 :have the same Vangular' spacing with respect tothe diskkasthe die plates 6 upon the disk land eachv of theseV plates has upon `itsinner edge asemi-circular-recess 8a which engages the stem of a blank held by the die plate 6 of the disk to clamp the blank during the forming operations, the die plates 6 and 9 "forming vthe Y dies upon the bed which cooperate with suitable dies carried by the head. Means are provided for intermittentlyv imparting a rotative movement to the disk at predetermined intervals, each movement being `iust sufficient to advance a ydie plate'6 from a position in alignment with oneof the slidable die plates on the bed to a position in alignment with the next slidable die plate.

As shown herein the disk l? has four die plates 6 and is adapted to hold four blanks spaced 90 apart thereon and the movement imparted to the disk 'upon each actuation will therefore be through an angle of 90. The

rotary movements are imparted to the disk 4 through a helical gear 12 fixed to the lower end of the shaft 3 which meshes with a helical gear 18 on a transverse shaft 1l beneath thebed, the shaft Mbeing actuated by a pawl and ratchet operated by the head actuating mechanism of the press. The pawl and ratchet mechanism comprisesan arm 15 pivoted on the shaft 14 and carrying a pawl 15a which engages withthe` ratchet 14a on the shaft 14 and ispressed toward the ratchet by a spring 15b. The pawl rides over the ratchet duringdown'ward movement of thev arm, 15

but engages thesame during the Vupwardl movement thereof so that rotation is imparted to the shaft-1li during the upward movement of the arm, the arml being connected to the head actuating vmechanism by a connecting rod 16' so that thel actuation of the disk occurs during upward movement of the head.

The cross-head or ram`2 of the press has attached tothe lower end thereof a plate 17 18, 19 and 20 which are so positioned that upon downward movement of the head they will engage with the stems a of the blanks which are held between the die plates 6 of the disk and the plates 9, 10 and 11 of the bed.

lnV addition the plate 17 carries depending vwedge barsV 21, 22 and 23 which when the head is lowered to bring the dies into engagement with the work project into openings 24 forniied in the bed. Each of thedepending wedge members has an inclined cam face 25 upon the inner side thereof, these cam faces servingto shift the slides 9, 10 and 11 toward the disk e, the slides 9 and 11 being provided Y with rollers 26 at their outer ends which engage with the inner faces of the wedge members 21 and 23 and the slide 10 being provided with rollers 27 which engage with the vwedge members 22, the slide 10V being actuby a pair of spaced wedge members 22 to permit feeding a strip of material for forming the attached head of the chaplets as will be hereinafter more fully explained.

The outer faces of the wedge members 21 and 23 engage with bearing plates 28 which arev adjlustably rennt-ed in the bed and the outer faces of the wedge members 22 engage with similar bearing plate 29 which is also adjustably mounted. The' slides 9, 10 and 11 normally held in their outermost positions by coil springs 30 which are interposed between the inner ends of the slides and stripper plates 231 Vwhich are held in engagement with. the periphery of the disk l by the springs. The stripper plates 31 are mounted below the die plates 9 and, when the die plates are in clamping position in engagement with the stems of the chaplets, the plates 31 are beneath the inner ends of the die plates so thatwhenthe slides are released, the stripper' plates Slwhich project slightly above the portion of the disk upon which the chaplets rest, will prevent movement of the chaplets with the die plates. The springs 30 are mounted at their inner ends upon a stem 32 proj ecting-outwardly from the stripper' plates 3l and at Ytheir ont-er ends in the recess 36 formed in the slides upon which the die plates are carriedg During the downward movement of the head the rollers 26 and 27 of the slides are engaged by the inclined cam faces 25 of the actuating members 2i., 22 and 23zind are vmoved inwardly to bring the die plates 9, 1()

and 11 into engagement with the die plates 6 of the disk which have, during the upward movement of the hea d, beenmoved into alignmen'-L ith the respect-ive radially movable die plata., to firmly hold the stems of the chaplets in position to be engaged by the descending dies "i8, 19 and 20. As the head begins its nl )ward movement, the cam faces 25 are moved out of engagement with the rollers and the slides are shifted out of engagement with the disk and the chaplets thereon by the springs 30 so as not to interfere With the Ylet stem after vthe stem has been forced through the sheet metal strip and has a rotary movement of the disk which is imparted thereto vduring the upward stroke of the head.

It is apparent that chaplet blanks supplied to the disks 4 will-be acted upon successively by the dies 18, 19-and 20. The die 18 is an upsetting die which .has a central recess to receive the upper end of the stem and an annular recess surrounding the central recess toieceive the metal forced outwardly by the downward pressure of the die upon the stem and form the annular shoulder Z intermediate the upper and lower ends of the stem. The die 19 is the head applying die which acts to press the end of the sheet metal strip upon the upper end of the stem of the blank causing the stem to pierce the strip and also has a cutter cooperating with a cutter block fixed to the bed for severing the pierced end portion of the strip to form the head of the chaplet. The die 19 .has ak central aperture 34 .to receive the upper end of the chapsquared rear edge 35 which cooperates with a stationary cutter block 36 on the bed to sever the strip. The sheet metal strip `from which the chaplet heads are formed is intermittently fed betweenthe actuating arms 22 into the space. between the die 19 and the die members on the bed with which theA die 19 cooperates by means of feed rollers 37 which are suitably supported on the frame of the machine at the rear of the press. Means are provided for imparting a turning movement to the rolls 37 during each upward movement of the head to feed the strip a predetermined amount. The rolls 37 are actuated by means of a ratchet 33 fixed to one ofthe rolls .which eel is engaged by a pawl 39 carried by a pivoted arm 4() which is connected at its upper end by a link 41 to a bell crank lever 42 which is pivoted to the frame andhas a pin and slot connection 43 .to the plate 17 of the head.

Upon each'actuation of the head the sheetv metal strip is fed forward a predetermined amount sd that the endthereof overlies the upper end of the stem of the chaplet blank.

and during the downward stroke of the head7 the portion of the strip projecting` in front ofA the cutter block 36 is severed by the rear edge of the die 19 and the severed piece is forced downwardly upon the upper end of the stem, the stem acting as a punch and piercing the piece, and the severed piece of the strip which forms thehead c of the chaplet being forced downwardly` into snug engagement with the shoulderd which has previously been formed onthe stem by the die 18. The slugs cut from the" pieces forming the heads of the chaplets are pushed upwardvly in the opening 34 of the die 19 and the plates 17 and head Qare provided with a passage 44 through which these slugs are pushed during the operation of the machine.

The die 18 forms the original blank such as shown in F ig. 5 into the shape shown in Fig. 6 and the die 1 9 applies the head c to the shouldered stem 'as shown in Fig. 7 The blanks are fed from the position in which they are actedupon by the die `19 into a position in which they are acted upon by thedie 20 which Y -is an upsetting die which fiattens out the `Qo'rtion of the stem projecting above the head c to securely fasten the head in placeV uponthe stem, the head c being held firmly against the annular shoulder d upon the inner sideVV rwith a pair of diametrically disposed periph-v eral pockets 43 which register during the operation of the machine with the successive retaining notchesv 8 of the disk 4 and deliver tlie chaplet blanks thereto. rIhe feed disk 47 is driven in a direction opposite that of the disk 4 by means of gears 49 and 50 which are attached to the disks`4 and 47 and are in mesh with each other. The adjacentr peripheral portions of the two disks are thus caused to move in the same direct-ion and the.

relative rate vof rotation of the two disks is such that the pockets 48 register with the successive notches 8 on the disks 4, the disk 47 being turned through one half a revolution, while the Vdisk 4 is turned through a quarter of a revolution. The transfer of the chaplet blanks from the disk 47 to the disk 4 is effected by a transfer plate 51 fixed to the bed and overlying the disk 47, the inner edge Vof the plate 51 being shaped to conform to the pe'- ripliery of the disk 4 so that the blanks are held in engagement with the die plates 6" after Jthey have beennioved into engagement therewith by the disk 47 and thus transferred from the disk 47 tothe disk 4. The chaplet blanks are supplied to the feed disks/47 "bymeans of al chute 52 which has an under# cut slot 53 to receive the heads of the blanks, the chute 52 being kept full of blanks by suitable mechanism in a hopper at the upper end thereof as well understood in the art.`V

The chute is so disposed with respect to the feed disk 47 Vthat the disk moves across the lower end of the chuteand the pockets 48 are so formed that as each pocket moves across the lower endv of the chute it will extract one blank therefrom, the chute being so formed as to deliver the blanks in upright positionl position to engage' with the stems thereof in in the pockets of the disk.

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It is desirable that means be provided or preventing the operation oit the press in the event that the supply of' blanks is interrupted or inthe event theta defective or impropbe wasted and the operation of the dies upon vimproperly positioned blanks or loose pieces o-metal might damage the'machine. Means are .therefore provided for automatically stopping the machine either upon interruption of the supply of blanks or upon deliveryV of any improperly positioned or `detective letA blank during its passage from the chute Y 52 to the disk 4 engages the underside of the blank to the feed disk. This safetydevice comprises an arcuate plate 54 which overc lies the peripheral portion of the disk 47 about which the blanks are moved during the transfer thereof Jfrom the chute tothe main disk 4, the platev 54 beingcarried by an arm 55 which is pivoted at 56 intermediate its ends to the bed and has an outer end portion which is engaged by a coiled spring 57 which tends to shift the outer end of the arm upwardly and to move the arcuate plate 54 downward-` ly toward the disk 47. The stem of each chapplate 54 and forces theplate upwardly in opposition to the spring and if the supply of blanks is continuous and these blanks are o'tthe proper size and properly positioned, the plate 54 will be maintained in raised position in Iopposition to the spring 57. The outer end of the arm underlies an adjustable contact member 58 and when the blanks are properly feeding is held out of contact with the contact member by the blanks., If', however, one of the pockets 48 o't the disk should fail to receive a blank or the blank should become improperly positioned, the outer end of the arm 55 will berocked upwardly bythe spring 57 and caused to engage with the contact member 58. The arm 55 land Contact members V58 are connected-in the circuit of a` solenoid 59 so that the solenoid is energized whenever the arm 55 l1s moved into engagement with the Contact 58. The core of the l v.solenoid 59 is connected to the horizontally 50 extending arm 60 of the bell crank lever which is pivoted'to the bed l and has an upwardly extending arm 61. The operation of v the press is controlled by a suitable clutch which is operated by the Ulever 62, the lever or clutch being provided with a spring acty ing in a direction to normally hold the clutch in disengaged position. The clutch is moved into engagement with a bracket 63 mounted upon the bed l. By shifting the lever 62 downwardly and engagin'g same with the bracket 63, the machine may be started into operation and will continue to operate as long as theblanks are properly i'fed by the feed disk 47. Whenever there is an interruption in the feed of the disks or a disk 'ted to the pocket 48 becomes-improperly positioned the arcuate plate 54 will be permitted to move downwardly toward the disk causing the circuit of the solenoid 59 to be closed whereupon the core of the'solenoid will be actuated causing the arm 60 of `the bell crank lever to swing upwardly and the upright arm 6l thereof to swing outwardly into engagement with the lever 62 pushing the same outwardly out of engagement with t-he retaining portion of the bracket 63 causing` the entire mechanism to be stopped so that the operator may do whatever may be necessary to reestablish the proper feeding of the blanks.

Having described my invention, I claim: l. A machine for. applying a head to the stem ol' a metallic retaining member comprising means lor forming a shoulder on the stem intermediate the ends thereof, means for applying a head to the stem, means or upsetting the end oli the stemto secure the head in place thereon against the shoulder, and means for feeding the stem to theshoulder forming 'means from the shoulder forming means to `for forcing theV ends of the stems through a Vsheet metal body and for severing the pierced portions of vthe body to form the heads, means 'for upsetting the ends of the stems to secure the heads in place, and means for feeding each stem successively to the shoulder formsoL ing means, from the shoulder forming means Y to the head applying means and from the head applying means to the upsetting means.

3. A machine for applying heads to the stems of metallic retaining members comprising a pair of upsetting dies adapted to form an annular shoulder upon the stems, a pair of head forming and applying dies spaced Jfrom sald first mentioned dies, means for feeding the material from which the heads are formed between said last mentioned dies, a pair of upsetting dies spaced from the vsecond pair or' dies for upsetting the ends of the stems to secure the heads in place,and means for successively and separately advancing each member'from the first pair of dies to the second and fromthe second pair of dies to the third.

4. A machine for applying heads to the stems of metallic retainingmembers comprising a bed, a carrier associated with the bed, means for intermittently actuating the carrier, die forming means on the bed cooperat- 55 the disk, die forming vmembers mounted on pair of dies for securing the heads to the f stems.

5. In a machine of the character described, 1 a bed, a carrier on the bed having at its edge mined positions, a head movable toward kand'from the bed, means for actuating the head duringtheintervals between the actual tions of the carrier, and dies carried by the head positioned to simultaneously engage a plurality of articles. I 6. In a machine for applying heads to the stems of metal retaining members, the com-- bination with a press having a bed and a head movable toward and from the bed,'spaced dies carried by thehead, means associatedk with the bed for forming dies aligned with the dies of the head and for successively positioning the stems inthe dies of the bed, means for actuating the head, and means associated with one set of dies for applying heads to thestems, the other of said sets of dies being adapted to upsetthe stems for securing the heads in place thereon. c 7. In a machine for formingmetallic retaining members, the combination with a press having a bed and ahead movable toward and from the bed, of a carrier disk rotatably mounted on the bed, said disk having regularly spaced peripheral notches adapted to receive said members, means for feeding a retaining member to each of the notches ofthe disk during rotation thereof,

' movable die forming means at'spaced intervals on the bed adapted to engagewith said members, dies carried by thehead adapted to cooperate withtlie dies on the bed, vmeans for alternately actuating the head and carrier, and means operated by the head in its movement toward the bed for actuating V*the movable die forming means. I

8. In a machine of the character described, the combination with a press having a bed and a head movable toward and from` the bed, a disk rotatably mounted on the bed, said disk having regularlyV spaced peripheral notches, adapted to engage articles on the bed and move the same over the bed, guiding means on thebed adjacent the periphery of the bed and for movementradially toward and from the periphery of the disk, said die` forming` members being regularly spaced, dies carried bythe head and positioned to coy operate with the 'dies on the bed, means for reciprocating the head and means for actuating the disk during upward movement of the head to successively align the notches with' the die forming members and means operated 'head movable toward and'from thebed, a roby the 'head for shifting the movable die forming members. f

9. In a machine of the character described, `the combination with a press having a bed and a head movable toward and from the bed, of acarrier disk rotatably mounted on the bed,.;said disk having a plurality ofregularly spaced notches adapted to receive articles to be operated upon, a die forming means slidably mounted on the ybed and movable to- Kward and fromV the periphery of the disk,V Vmeans for intermittently actuating the disk to bring the notches thereof successively'into alignment with the die formingV means, means n for moving the head tcwardthe b-ed in the intervals between the movements ofthe disk,

yineansioperated by the head for shiftingy the die forming means into engagement with the disk and a stripper associated with the die` Y forming means to prevent movement of the article Withfthe diev forming means upon movement thereof away from the disk.

Vl0. In a machine of the character described, the combination with a press having a bed and head movableV toward and from thevbed, of a disk rotatablyV mounted upon the bed, said disk having regularly spaced periph-eral notches adapted to receive articles tc be operated upon, means associated with the bed forr retaining the articles in the notches, formingmeans carried .by the Y headadapted to Aengage with the articles held Y in the notches ofthe disk, means for actuating the head and fcrvimparting a rotative movementto the disk during the intervals bei tween the operatingstrokes of the head, a feed disk on the bedhaving a plurality 'of regularly spaced peripheraliiotches, means for actuating the feed disk from the first men-Y tioned disk to cause the notches of the feed disk to successively register withthe notches of the lirst'mentioned disk, and means for feeding articles to the notches of the feed Y disk. ll. In a machine of the character described,

' thecombination with a press having a bed and a head movable toward and from the bed, of a rotary disk mounted on the bed and provided with regularly `spaced peripheral notches, slides carried by the bed and movable toward and from the periphery of the disk,v Y

said slides having notches adapted to register with notches of the disk `and to engage arti# cles held therein, means actuated bythe head Y for turning the disk to successively bring,- tlie notches thereof into alignment with said slides, dies carried bythe head engageableV with articles held between the slides and disk,

andwedgc `niemi'ieis carried by the head and engageable withvr the slides to move the same into engagement with the disk. L

`12. In a machine for applying heads to the stemsV of metallic fastening members, the combination with a press having a bed and a frio tatabledsk arranged on the bed,' a plurality of dies, said dies comprising die forming members arranged on said disk and cooperatf ing movable die forming members arranged on Said bed, means forintermittentlyrotating said disk for successively advancingthe die formlng `members earned thereby lnto c0opferatng position with the die forming memhers on the bed, dies onthe head cooperating with the Vdies onthe bed, means operated by the headfor intermittently fee-ding a strip of ,sheet metal over one of the diesv on the bed,

signature.

and'meanassocated with a die on the head Jfor cutting off apiece of said strip after each 'actuation thereol and for applying the severed piece to thefstem.

e In ytestimonywhereof, I hereunto aix my EDWARD H. SCI-MNE. 

